Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
200032goodexcellent31excellent
190025goodexcellent31excellent
180049goodexcellent41excellent
170031goodexcellent31excellent
160021goodexcellent21excellent
150020excellentexcellent21excellent
140015excellentexcellent21excellent
130015excellentexcellent21excellent
120011excellentexcellent21excellent
110014excellentexcellent21excellent
100012excellentexcellent21excellent
090025goodexcellent21excellent
080018excellentexcellent21excellent
070016excellentexcellent21excellent
060014excellentexcellent11excellent
050012excellentexcellent11excellent
040010excellentexcellent11excellent
030012excellentexcellent11excellent
020024goodexcellent31excellent
010028goodexcellent41excellent
000017excellentexcellent41excellent
230029goodexcellent51excellent
220033goodexcellent51excellent
210039goodexcellent51excellent